Allow Django 1.10 failures while django-mptt/django-polymorphic are still not compatible.
Allow Django 1.10 failures while django-mptt/django-polymorphic are still not compatible.

django-fluent/django-fluent-contents,django-fluent/django-fluent-contents,edoburu/django-fluent-contents,django-fluent/django-fluent-contents,edoburu/django-fluent-contents,edoburu/django-fluent-contents